Hi, I'm only 13 but I've been asked this question many times and sometimes there is a clear answer. You are who YOU are, and nobody can change that. Whoever you are is yourself, everybody is unique and different, but being different and being YOU is what makes you special. Sometimes people just never feel like an adult. If what you mean is you haven't grown up by liking and watching cartoons, having people over when it is your birthday, going to places like Disney or Lego land, having hobbies like a kid; honestly, who cares! Nobody should care or have any judgement against that; you are who you are, if it makes you happy then so what, your happy! We are all human, we all make mistakes and we all like different things. You can be a happy, fun-loving person, and still be an adult. There is no one way to be an adult and the only thing that changes is the amount of responsibilities put upon you. A lot of people, including me, like being you again. I'm 13 and I haven't grown insanely yet; I am much taller and have a deeper voice, but I still like doing SOME stuff I did when I was a child, building Lego, playing (video) games, having fun, messing about with friends etc. But I dont care, my parents and family don't care, none of my friends judge it (they do the same lol). What did you think was going to happen? Did you think there was going to be some magical moment where you “felt” like an adult? Did you expect there to be some sort of adult orientation package arriving through the mail, that there would be some sort of ceremony? Sure there are cultures that have a ceremony concerning the arrival into manhood, but do you think those people feel like adults? Ask anyone who is an adult, and they might tell you they are old, that they are responsible, and they have jobs and wives, husbands, children, and grandchildren, but do you think they “feel” like an adult? My 45 year old Dad is ADDICTED to building and playing with Lego, he is like a normal father, loving, caring, takes care of me, works hard like a grown up man but inside, loves stuff like LEGO. I enjoy the same and don't care the he is 45 years old and loves LEGO, nobody does. Some people may look very grown up on the physical appearance and outside, but may be different on the inside. Trust me, lots of people are immature. Sometimes I myself have been very immature and stuff, but so what, most people are. No-one should judge you on that cuz chances are they r the same.
If this is more like a problem of getting someone to like you or struggling to find someone you truly love, here are the basic tips:
1. Make Eye Contact First
2. Don't blabber on about what to say, just say 'Hey' to greet and introduce yourself
3. Naturally Boost Your Confidence & Attractiveness With Your Posture
4. Talk About Your Common Interests and what you like
5. Start to Consider Your Body Language.
6. Impress Her, doesn't always have to be physically. I'm not got insane muscles and massive huge 6 packs like others, just a little 6 pack but girls still like me
7. Make Her Laugh, women/girls like boys who are funny
8. Know What She Likes
9. COMPLIMENTS. Girls love boys complimenting them on their physical attractiveness, beauty, how they are, and themselves
I would say the most key is CONFIDENCE. I used to be VERY shy when I was young, I tried in Year 6 asking 2 girls out to the dance but it didn't work cuz I wasn't confident. I've had a best friend who is a girl since like 7 or 8 or something (not in a bf gf way lol), she's always liked me for WHO I AM but has always said that I need to be more confident in my self. Now, I've built my confidence up and girls actually like me now, cause I am confident when approaching girls. Those 9 tips above should make you the perfect person for a girl, and remember, you are who you are! If you need any help with anything, pm me.
And yes, there are plenty of slightly immature people (partly including me) out there. Some quick tips are:
Take responsibility for your actions. Try to reason from a different perspective before taking any action. Avoid risky behavior. Improve your self-awareness and self-understanding, and keep an open mind.
Hopefully this helps lol, this took me 20 mins to type lol for a 13 yr old! Good luck!!!